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Kallian

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A 20.0-kg crate sits at rest at the bottom of a 13.5 m -long ramp that is inclined at 40 ∘ above the horizontal. A constant
1. 1 answer
2. 4,182 views
A 20N block rests on a table, connected by a massless rope to a 12N block hanging off the table. Assume the pulley is light and
1. 4 answers
2. 712 views
You stand at the bottom of an 8.0-m-long ramp that is inclined at 37∘ above the horizontal. You grab packages off a conveyor
1. 4 answers
2. 2,601 views

For the smaller block, wouldn't the sum of forces be: T - W = ma T - mg = ma T = ma + mg = m(a+g) Why is it m(g-a) instead?
Ah, so I did. Thanks for the help!
For the second part, I set: 1/2mv^2 = (mg*8*sin37) - (0.3*mg*cos37) or 0.5v^2 = (g*8*sin37) - (0.3g*cos37) 0.5v^2 = (47.18) - (2.347) = 44.833 v^2 = 2(44.833) = 89.666 v = rad(89.666) = 9.469 m/s but this is not the correct answer. Did I miss something?

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